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Sustaining Together Making Your BAS System Work for You.

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Presentation on theme: "Sustaining Together Making Your BAS System Work for You."— Presentation transcript:

1 Sustaining Together Making Your BAS System Work for You

2 FM – Energy Management Talking Points  Scheduling  Alarm Management  Equipment Warnings  Background  Timeline Northrup Auditorium – Built 1928

3 FM – Energy Management Background Nils Hasselmo Hall – Built 1996  220 Buildings  $50 million annual utility budget  BAS Systems  Johnson Controls  Honeywell  Siemens  Tridium  Trane  Automated Logic  24 million square feet  900+ BACnet/IP controllers  25,000+ field controllers Nils Hasselmo President from Known for commitment to undergraduate education.

4 FM – Energy Management Timeline Jones Hall – Built 1901  Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems Frederick Jones 1889, First Professor of Physics Dean of College of Engineering

5 FM – Energy Management Timeline  Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems  2003 – 2005 – Emergence of native BACnet DDC systems Phillips Wangensteen – Built 1974 Owen Wangensteen Chief of Surgery at UofM Med School – Pioneered open heart surgery. Credited with saving over 1,000,000 lives!

6 FM – Energy Management Change to BACnet 2004

7 FM – Energy Management Change to BACnet

8 FM – Energy Management Timeline  Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems  2003 – 2005 – Emergence of native BACnet DDC systems  2006 – 2011 – System Upgrades Pilsbury Hall Built in 1889 John S. Pilsbury 8 th Governor of Minnesota from

9 FM – Energy Management TCF Bank Stadium Science Teaching & Student Services Medical BioSci Bldg Translational Research System Upgrades

10 FM – Energy Management JCI N2 Honeywell C-bus Siemens P1 Trane Legacy System Upgrades

11 FM – Energy Management Timeline Jones Hall – Built 1901  Pre-2003 – Proprietary DDC & Legacy electro-pneumatic systems  2003 – 2005 – Emergence of native BACnet DDC systems  2006– 2011 – System Upgrades  2012 – Present – Optimization

12 FM – Energy Management Optimization Weisman Art Museum – Built 1992  2012 – 2013 – Optimization  Scheduling  Alarm Management  Equipment Warnings Frederick Weisman Philanthropist & art collector. He donated $3 million dollars to the UofM to establish this art museum.

13 FM – Energy Management Scheduling Eddy Hall – Built 1881  Over 1700 pieces of HVAC equipment running on time schedule.  Weekly, we track scheduled hours and compare them to actual runtime. If there’s a delta, we investigate.  If you can’t shut the fans off, consider reducing the static pressure or slowing down the fan by 10-15% over night. Henry Eddy – Math professor, Civil Engineer and dean of college of engineering. Eddy Hall is the oldest Building on campus.

14 FM – Energy Management Scheduling ~8% ~70% Looks for fans not running the amount of hours they are scheduled. VFD Speed HP Schedule Variance Report

15 FM – Energy Management Scheduling  Over 1700 pieces of HVAC equipment running on time schedule.  Weekly, we track scheduled hours and compare them to actual runtime. If there’s a delta, we investigate.  If you can’t shut the fans off, consider reducing the static pressure or slowing down the fan by 10-15% over night.

16 FM – Energy Management Scheduling Static Pressure Setpoint Static Pressure Reset Schedule Fan Speed Reduction Schedules Should see bell W curves every day.

17 FM – Energy Management Scheduling Static Pressure Setpoint Static Pressure Reset Schedule Fan Speed Reduction Schedules No bell W curve. Flat-line.

18 FM – Energy Management Scheduling Eddy Hall – Built 1881 ~80% ~70% Savings will vary based on the fan size, but there will be savings. VFD Speed Static Pressure Schedule Fan Speed Reduction Schedules

19 FM – Energy Management Alarming Smart Alarming CRITICAL ALARMS -Alarms that require immediate alert & action. HVAC ALARMS -Alarms that can be prioritized & backlogged. WARNING ALARMS -Alarms that indicate maximum analog effort.

20 FM – Energy Management Alarming Donhowe Building – Built 1924 Smart Alarming CRITICAL ALARMS -Alarms that require immediate alert & action. Safety trips, command/status mismatches, critical temperature limits, etc.

21 FM – Energy Management Alarming Folwell Hall – Built 1906 Cost to build: $416, cost to remodel: $34,500,000 Smart Alarming Unreliable points, setpoint drift, all room temps deemed ‘non-critical’ spaces, other points that do not require immediate dispatch. HVAC ALARMS -Alarms that can be prioritized & backlogged.

22 FM – Energy Management Alarming SE Steam Plant Built in 1902 Provides steam to all of Minneapolis campus buildings. Smart Alarming Discharge Air Temp-Setpoint = 55˚ HVAC ALARMS -Alarms that can be prioritized & backlogged. High Alarm Limit = 65˚ Low Alarm Limit = 45˚ 10˚ bracket Discharge Air Temp-Setpoint = 60˚ High Alarm Limit = 70˚ Low Alarm Limit = 50˚ 10˚ bracket Rule! 10 minute Alarm Delay

23 FM – Energy Management Alarming Washington Ave. Bridge Pedestrian bridge will have light rail trains running across it in Smart Alarming Static Pressure Setpoint = 1.0 in wc HVAC ALARMS -Alarms that can be prioritized & backlogged. High Alarm Limit = 1.3 in wc Low Alarm Limit = 0.7 in wc 0.3” bracket

24 FM – Energy Management Alarming Mariucci Arena Built in 1993 – Home of Gopher Hockey Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. WARNING ALARMS -Alarms that indicate maximum analog output effort. Reheat Valves not working properly Unattainable airflow settings

25 FM – Energy Management Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. VFD at 100% No Static Pressure Static Pressure Alarm Limits

26 FM – Energy Management Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. VAV Damper is at 100% ~1000 cfm short of setpoint.

27 FM – Energy Management Smart Alarming VFDs, VAV dampers, heating & cooling valves that are at 100% command. Just Data!

28 FM – Energy Management Alarming Focus Lists Using database queries on the alarm database, alarm statistics can be pulled to provide a targeted list of unhealthy behaviors. Heating valves should not fully open times per week during July.

29 FM – Energy Management Review Moos Tower Built in 1970 Costs nearly $500K per month to operate ! Proprietary Pneumatics Open Protocol DDC Controls Integrate Optimize Consulting Firms

30 FM – Energy Management Continuous Commissioning  Keep fans running at or below scheduled hours.  Only get alerted for really important critical alarms.  Reduce fan speeds &/or widen setpoints for a few hours every night.  Run reports to collect high frequency non-critical alarms & plan to address a couple items per week.  Keep track of analog outputs that are often at 100% effort.

31 FM – Energy Management QUESTIONS ?


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